Question Help needed finalizing decision on UPS.

Jul 11, 2023
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2
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Hello,

I think I have considered the major questions necessary to choose an appropriate UPS. Would you mind reviewing the questions, answers, and chosen UPSs? I will greatly appreciate any thoughts and recommendations you have to share. I live in the U.S. and the wall outlets are rated at 120v.

1. Question: What amount of time is needed during a power outage? Answer: 10 minutes to safely save a game or office application.

2. Question: What is the number of watts my PC consumes and the VA requirement? Answer: According to PCPartsPicker, the parts listed below consumes 560w. Based on this number, and the assumption of a 0.7 power factor for a gaming PC, I believe that a 1000VA to 1200VA PSU is sufficient to power my PC for the necessary 10 minutes. My first calculation is the watts I would like to cover. 560W x 1.25 = 700W. The 1.25 is 25% additional watts as a just-in-case I currently use more than 560W or I add/upgrade a part(s) that requires more power. The second calculation is calculating the VA based on calculated watts. Assuming a power factor of 0.7, I calculated VA as 1000VA x 0.7 power factor = 700W and as 700W x 1.7 power factor = 1190VA, or 1200VA rounded.

3. Question: How frequently does black and brown outs occur? Answer: A black out averages to once every 1.8 months per year. Brown outs, or power sags, do happen much more frequently than black outs. As such, I think line-interactive is preferable over standby.

4. Question: Does one or more of the PC’s devices have an active power factor correction (PFC) or incorporates fragile or sensitive electronics? Answer: I am uncertain; therefore, I have chosen a pure sine wave output.

5. Question: How many UPS outlets require connection to the battery backup? Answer: At least 4: one for the PC, two for each monitor, and one for a future peripheral such as speakers.

6. Question: What is the PC used for? Answer: The PC is used for gaming and working with Microsoft Office applications. I do not overclock or apply excessive demands on the system.

Based on my answers, the following are the UPS systems I am considering.

1. https://www.amazon.com/gp/product/B00429N19M/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&th=1

2. https://www.amazon.com/gp/product/B08GRY1W93/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1

CPU
AMD Ryzen 7 7700X 4.5 GHz 8-Core Processor

CPU Cooler
Deepcool AK620 68.99 CFM CPU Cooler

Motherboard
Gigabyte B650 AORUS ELITE AX ATX AM5 Motherboard

Storage
Samsung 980 Pro 1 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive
Samsung 980 Pro 2 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive

Video Card
PowerColor Hellhound Radeon RX 7900 XTX 24 GB Video Card

Case
Lian Li LANCOOL 216 ATX Mid Tower Case

Power Supply
MSI A1000G PCIE5 1000 W 80+ Gold Certified Fully Modular ATX Power Supply

Operating System
Microsoft Windows 11 Home OEM - DVD 64-bit

Monitors
Acer Nitro XV272U Vbmiiprx 27.0" 2560 x 1440 170 Hz Monitor
 
Based on this number, and the assumption of a 0.7 power factor for a gaming PC
with old PSU without PFC, yes, but with modern PSU with PFC, powerfactor is somewhere between 0.8-0.99
ie 80+ bronze at 0.8+, 80+ platinum at 0.9x+, there are some variations between PSUs based on load, but it shouldnt be droppin below 0.8 power factor at all
My first calculation is the watts I would like to cover. 560W
CPU - 142watts
cooler - 6watts
motherboard - 7watts
storage - 2x6 watts
videocard - 2x8pin (300watts)+ pcie slot (75watts) - max possible power, bios set to 315watts
monitor - 97watts (max)
maybe some peripherals/rgb (50watts), say 2 ram sticks (8 watts)

and we are already at around 650-700 watts peak power

you dont have wall meter? that would tell you whats your gaming VA load from wall
but yes 1000-1200VA UPS is sufficient
 
with old PSU without PFC, yes, but with modern PSU with PFC, powerfactor is somewhere between 0.8-0.99
ie 80+ bronze at 0.8+, 80+ platinum at 0.9x+, there are some variations between PSUs based on load, but it shouldnt be droppin below 0.8 power factor at all

CPU - 142watts
cooler - 6watts
motherboard - 7watts
storage - 2x6 watts
videocard - 2x8pin (300watts)+ pcie slot (75watts) - max possible power, bios set to 315watts
monitor - 97watts (max)
maybe some peripherals/rgb (50watts), say 2 ram sticks (8 watts)

and we are already at around 650-700 watts peak power

you dont have wall meter? that would tell you whats your gaming VA load from wall
but yes 1000-1200VA UPS is sufficient
Yikes. Seems like I was off a tad. Thank you very much for the information.

No, I do not have a wall meter. Honestly, I didn't know that existed. I am very new to PCs.